Heel cup



FIG. 1 is a perspective view of a heel cup showing our new design;

FIG. 2 is a bottom plan view of a heel cup shown in FIG. 1;

FIG. 3 is a top plan view of a heel cup shown in FIG. 1;

FIG. 4 is a medial side view of a heel cup shown in FIG. 1;

FIG. 5 is a lateral side view of a heel cup shown in FIG. 1; and,

FIG. 6 is a back elevation view of a heel cup shown in FIG. 1.

All surfaces not shown form no part of the claimed design. 

CLAIM The ornamental design for a heel cup, as shown and described. 